Journal of Food, Agriculture and Environment

Effect of gibberellic acid application on growth and yield of artichokes under summer conditions

Author(s):

Gvozden Dumičić ^1*, Smiljana Goreta Ban ¹, Lovre Bućan ¹, Josip Borošić ², Milan Poljak ³

Recieved Date: 2009-07-03, Accepted Date: 2009-10-06

Abstract:

Globe artichoke (Cynara scolymus L.) is a perennial Mediterranean crop that is mostly harvested during the spring. The aim of this research was to determine the influence of GA₃ on the flower stalk growth and yield components of artichokes grown during the summer-autumn period. Field experiments were set up with the artichoke cv. Imperial Star at two locations: at Imotski (43º15’N, 17º14’E) in May 2002 and 2003, and at Split (43º30’N, 16º30’E) in May 2002, May 2003 and June 2003. Plants were treated once or twice with three concentrations of GA₃ (0, 15 or 30 mg. L^-1), giving three combinations (0, 0+30 or 30+15 mg L^-1 GA₃). At both locations in both years, higher flower stalks were observed in plants treated with 30+15 mg.L^-1 GA₃ than in those treated with 0 or 0+30 mg.L^-1 GA₃. Artichokes planted in May bolted from 82-100% after GA₃ application, while the percentage of the bolted plants from the June planting ranged from 0 for control plants to 45% when treated with 0 + 30 mg L^-1 GA₃, and 63% when treated with 30+15 mg L^-1 GA₃. Early yield (defined as the first three harvests) ranged from 0-4.6 t ha^-1 and increased by GA₃ treatment. Plants sprayed with 30+15 mg L^-1 GA₃ produced higher early yields compared to plants that received the other treatments at both locations and in both years. The total yield of plants sprayed twice with GA₃ increased 20-100% as compared to the untreated plants. The application of GA₃ increased the number of heads (primary, secondary and total), while its impact on head weight was less pronounced. GA₃ application during the summer cultivation increased bolting and yield, especially under non-inductive conditions in the coastal area for the June planting.

Keywords:

Bolting, Cynara scolymus, earliness, flower stalk

---

Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 3&4
Category: Agriculture
Pages: 620-626

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :